Cutting machine



L. E. MAQUAT CUTTING MACHINE May 30 1950 3 Sheets-Sheet 1 Filed Nov. 6, 1946 INVENTOR E. MAQUAT LLUYD ATTORN EY L. E. MAQUAT CUTTING MACHINE May 30, 1950 3 Sheets-Sheet 2 Filed Nov. 6, 1946 INVENT OR LL UYD E. MAQUAT ATTO RNEY y 9 1950 L. E. MAQUAT 2,509,602

CUTTING MACHINE 3 Sheets-Sheet 3 Filed Nov. 6, 1946 INVENTOR U LLUYD E MA UAT BY y ATTORNEY Patented May 30, 1950 CUTTING MACHINE Lloyd E. Maquat, Easton, Conn., assignor to The Black Rock Manufacturing Company, Bridgeport, Conn, a corporation of Connecticut Application November 6, 1946, Serial No. 708,133

7 Claims. 1

This invention relates to new and useful improvements in cutting machines and has particular relation to a machine especially adapted for cutting bars, tubes, etc., of rubber into lengths.

The machine of the invention includes a movable cutting knife, a die or the like through which the stock to be cut is fed and which cooperates with the knife in the cutting of the stock, and a stop in the form of a rotatable cylindrical device arranged to be engaged by the stock, with the latter generally below the center of the cylinder whereb pressure of the stock against the stop tends to rotate the latter and direct the stock downwardly, whereby cut lengths of the stock drop out of the way to permit of substantially continuous feeding of the stock through the die.

The objects and advantages of the invention will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawings wherein a satisfactory embodiment of the invention is shown. However, it is to be understood that the invention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claims.

In the drawings:

Fig. 1 is a side elevational view of the machine of the invention;

Fig. 2 is a vertical sectional view taken as along the plane of the line 2-2 of Fig. 1;

Fig. 3 is a horizontal sectional View tak n as along the plane of the line 33 of Fig. 2; and

Fig. 4 is a detailed sectional view taken as along the plane of the line -4-4 of Fig. 2.

Referring in detail to the drawings, the machine of the invention is shown as including a main casting generally designated in and forming a combined housing and mounting structure. A base ll, located in the lower portion of the housing H], is hingedly mounted at one edge, as

at l2, the hinge being secured in place as by the bolts l3. n the base II is mounted a suitable electric motor I 4, the shaft I5 of which carries a relatively small diameter pulley l6.

Above and parallel with the motor l4, housing In mounts a shaft l'l carrying a relatively large pulley l8. Trained over the pulleys l6 and Hi, whereby the latter is driven by the former, is a belt 19. As best shown in Fig. 2, the shafts l5 and I! extend through a side wall 20 of the casting' Ill and the pulleys are located on such extended portions of the shaft. All of this extending structure is shown as included Within a suit- 2 able guard or housing 2| of sheet metal or the like.

At the other side of the casting l0 and beyond the wall or web 2| thereof and adjacent the lower end of such wall or web is a base 22 on the upper side of which is located a die 23 held in place as by bolts 24. This die has an opening 25 of the desired diameter and through which the stock 2-8 is fed either manually or by any suitable mechanism as may be desired.

On its front and rear sides 21 and 2-8, casting It is provided with louvers 29 located above openings permitting circulation of air through the interior of the casting and particularly about the motor M. The stock 26 is fed in through the rear of the machine, through the die: 23, and against a stop-gage 30. Such stop includes a roller or cylinder 3! rotatably mounted on a shaft or arbor 32 and the cylinder extends horizontally across the path of movement of the bar, as for example the stock 2-6, through the die opening 25.

The arbor or shaft 32 includes a flat portion 33 located in a vertical slot 34 in the outer headlike end portion 35 of a bracket arm 36. Beyond its portion 33, the arbor is of reduced diameter and threaded as at 31 for the reception of a nut 38 for clamping the arbor against said head por-- tion 35. A vertically disposed screw 39 passes longitudinally through the slot 34 and is threaded into the flatted arbor portion at 33.

As shown, the head of this screw is knurled as at All and the screw is held in the bracket of head portion 35 as by a pin or key or the like 4| passing through a side of an annular groove 42 in the shank of the screw. Thus, the screw is mounted for turning movement only. Clearly, on easing or releasing of the nut 38, the cylinder or roller 3| may be adjusted vertically by turning of the screw 39. The knurled head 4b of the screw provides a convenient means for turning of the latter. After the arbor 32 has been adjusted to dispose the roller 3! in the desired position of adjustment, nut 38 is tightened.

In addition to this vertical adjustment of the roller 3i, the latter may be adjusted forwardly and rearwardly with respect to the die 23. Such adjustment is made possible by providing a bracket arm 36 with a relatively long slot 43 through which passes a pair of bolts 44.

On loosening of these bolts, the bracket arm may be adjusted to carry the stop roller 3| toward or from the die 23 and thereafter the bolts or nuts 44 are tightened to secure the stop in this new position. The distance between the .stop roller 3| and the near side of the die 23 longitudinal center line.

determines the length of the piece to be cut from the stock 26.

On the forward end of the shaft H is a head 45 to which a bolt or the like 46 connects the upper end of a pitman 41. Bolt at is located in eccentric relation to the shaft i7 and therefore as said shaft is rotated the pitman 47 is reciprocated. A pin 58 pivotally connects the lower end of pitman 51 with a head 49 adapted for vertical reciprocation between guides 51 Secured to this head, as by dowels i and-a bolt and Wing nut means 52, is a double edged knife 53. On one edge of the knife being dulled, the wing nut 52 may be removed and the knife removed from the head 29 and replaced in reversed position to dispose its other edge iowermost. It is noted that the knife 53 is located to reciprocate it or against the forward side of the die 23 for the purpose of shearing lengths from the stock 26.

Preferably, a transparent means 5 3 is located about this portion of the machine whereby the operator may see the actiontaking place. This means 54 is preferably of a tough transparent plastic, such as Will not readily shatter. In this connection, the use of methyl methacrylate resin such as sold under the name of Lucite or Plexiglass is suggested. Above the housing 5% a metal housing 55 encloses the pitman and its connection with the shaft :7.

When using the machine of the invention, the stop roller 3! is adjusted to the'desire'd distance from the forward face of the die 23 and is properly adjusted vertically. This latter adjustment will be determined by the diameter of the stock which is to be cut up and the roller is located to have the stock engage the roller slightly below its This is as shown best in Fig. 4.

It will be understood that the stock 26 is being pressed against the roller. The knife 53 is being reciprocated at the desired speed, depending on the speed of the motor and the relationship between. the diameters of the pulleys l5 and l8. As the knife descends and passes through the stock, a length of stock 56 is cut from the bar, tube, or the like. It will be understood that the main body of the stock is being pressed forward- 1y against this length "55 and there is a tendency for the latter to jam in place and prevent further feed of the bar, tube or the like.

However, with the present construction including the rotatable cylinder or roller 33 in the ad justed position shown, the pressure being below the center of the latter and the latter being perfectly free to rotate does turn and carry the forward end portion of the length 55 downwardly whereby it falls away leaving the space between the die and the roller free for the forward movement of the next length of stock. The action in these machines is rather rapid and when a severed piece does not fall free and take itself out of the way, the movement of any new length of stock into place for severing is prevented. With the present structure there is no danger of .a severed piece remaining in place and therefore there is nothing to prevent the rapid feeding of 'the'stock through the machine.

Having thus set forth the nature of m invention, what I claim is:

1. In a machine for cutting stock into lengths, a die through which the stock is fed, a stop for- 'wardly of said die for limiting the length of the stock which may be fed through the die, a blade, means for reciprocating said blade across the 4 forward face of the die to sever the stock, said stop comprising a roller, a bracket mounting said roller for rotation about its own axis in either direction, and means for adjusting said bracket in directions to dispose said axis at the selected side of the line of feed of stock through said die whereby the lead end of the fed stock engages the roller to one side of said axis in a manner to rotate said roller about said axis and shift such end of the stock out of said line when such end of the stock is severed by said blade.

2. In a machine for cutting stock into lengths, a die through which the stock is fed, a stop forwardly of said die for limiting the length of blade, means for reciprocating said blade across the forward face of the die to sever the stock,

said stop comprising a freely rotatable roller positioned to be engaged by the forward end of the stock in a manner to rotate with such end of the stock when the latter is severed by blade, a bracket arm mounting said stop, said bracket arm having an elongatedslot therein,

boltrneans passing through said slot whereby said stop is mounted for adjustment within the limits of the length of said slot toward'and from the forward face of saiddie.

3. In a machine for cutting stock into lengths,

a die through which the stock is fed, a stop forwardly of said die for limiting the length of the stock which may be fed through the die, a blade, means for reciprocating said blade across the forward face of the die to sever the stock, said stop comprising a freely rotatable roller positioned to ice-engaged by the forward end of the stock in a manner to rotate with such end of the stock when the latter is severed by said blade, and means mounting said stop roller for adjustment transversely of the direction of the feed of the stock to position the roller for cooperation with stock of different diameters.

4. In a machine for cutting stock into lengths, a die through which the stock is fed, a stop for.- wardly of said die for limiting the length of the stock which may be fed through the die, a blade, means for reciprocating said blade across the forward face of the die to sever the stock, said stop comprising a freely rotatable roller positioned to be engaged by the'forward end of the stock in a manner to rotate with such end of the stock when the latter is severed by said blade, said means including a part having a slot therein, an arbor mounting said roller and having a portion passingthrough said slot, means part, and means operative to adjust said arbor in the direction of the length of said slot on release of said clamping means for disposing the stop roller in the desired relation to the line of feed of the stock through the die. 7

'5. In a'machine for cutting stock into lengths, a die through which the stock is fed,'a stop forwardly of said die for limiting the'length of the stock which may be fed'through the die, a blade, means forreciprocatingsaid blade across the forward face'of the die'to sever the stock, said stop comprising :a freely rotatable roller positioned to be engaged by "the forward end of the stock in a manner to rotate with such end of'the stock when the-latter-is severedby said blade, and means mounting'said stop roller for adjustment toward and from the forward face of said die and in a direction transverse to the line of feed of said stock.

6. In a machine for cutting stockinto lengths,

a die through which the stock is fed, a stop forwardly of said die for limiting the length of the stock which may be fed through the die, a blade, means for reciprocating said blade across the forward face of the die to sever the stock, said stop comprising a freely rotatable roller positioned to be engaged by the forward end of the stock in a manner to rotate with such end of the stock when the latter is severed by said blade, means mounting said stop roller for adjustment toward and from the forward face of said die and in a direction transverse to the line of feed of said stock, said means comprising a bracket arm having a head at the forward end thereof, said bracket arm having a slot therein parallel with the direction of feed of the stock through said die, bolt means passing through said slot for securing said bracket arm in place with said stop roller in the desired position of adjustment forwardly of said die, a slot in the head of said bracket arm and extending transversely of the direction of feed of the stock through the die, means mounting said stop roller and located in said slot, and means for adjusting said means longitudinally of said slot to dispose the stop roller in the desired position with respect to the line of feed of the stock.

7. a machine for cutting material into lengths, a blade, means for reciprocating said blade, a surface across which said blade is reciprocated, means for feeding stock transversely of said surface for cutting of the stock by said blade, a stop forwardly of said surface, said stop comprising a freely rotatable roller located to be pressed to one side of its center line by stock coming thereagainst whereby on severance of the stock by said blade the roller is turned and the stock carried from a position between the roller and said surface, and means mounting said stop roller for adjustment toward and from and in a direction transverse to the line of feed of said stock to position the roller for cooperation with stock of different diameters.

LLOYD E. MAQUAT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 445,294 Treat Jan. 27, 1891 1,417,830 Joslin May 30, 1927 1,690,503 Rhodes Nov. 6, 1928 1,931,760 Hermansdorfer Oct. 24, 1933 FOREIGN PATENTS Number Country Date 434,918 Germany Oct. 5, 1926 140,710 Austria Feb. :25, 1935 

